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Topic: Aug 31 VH |
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Replies: 8
Views: 33507
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Forum: Daily Sudoku puzzles Posted: Tue Sep 01, 2009 2:10 am Subject: Aug 31 VH |
For me a:skyscraper 5
Very good. I seldom ever recognize a skyscraper. I found one after you posted your solution. The fives in columns 3, 6 (* marks the cells) remove the 5s (r marks the cells) in ... |
Topic: Aug 31 VH |
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Replies: 8
Views: 33507
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Forum: Daily Sudoku puzzles Posted: Mon Aug 31, 2009 11:57 am Subject: Aug 31 VH |
Here is the grid after basics. xy wing solved it for me.
+------------+-------------+------------+
| 6 39 89 | 45 2 34 | 358 7 1 |
| 7 4 1 | 8 35 9 | 35 6 2 |
| 2 5 38 ... |
Topic: Aug 23 VH |
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Replies: 16
Views: 59173
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Forum: Daily Sudoku puzzles Posted: Mon Aug 24, 2009 1:56 am Subject: Aug 23 VH |
There is an alternative which not everyone cares for, a Type 2 UR.
I neither care for nor fail to care for UR IIs.
Could you direct me to where I can find a 'splanation of a UR II ?
Does this inv ... |
Topic: Aug 23 VH |
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Replies: 16
Views: 59173
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Forum: Daily Sudoku puzzles Posted: Sun Aug 23, 2009 3:34 pm Subject: Aug 23 VH |
Ahhh...there are a couple of singles that I did not see. Thanks for pointing them out. Sometimes, I just cannot see those hidden singles even after staring for many minutes at the puzzle.
Of course, ... |
Topic: Aug 23 VH |
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Replies: 16
Views: 59173
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Forum: Daily Sudoku puzzles Posted: Sun Aug 23, 2009 7:35 am Subject: Aug 23 VH |
I had to use an x-wing on 8s before I could locate and use the xy wing that Earl describes. For me this was a 2-stepper. Did I miss something?
+------------+-----------+-------------+
| 4 2 8 ... |
Topic: Aug 13 VH |
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Replies: 9
Views: 42212
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Forum: Daily Sudoku puzzles Posted: Sat Aug 15, 2009 3:57 am Subject: Aug 13 VH |
Keith:
Methinks you have b & c reversed.
Basics are not complete in the grid posted above. You can get to here:+-------------+-------------+-------------+
| 57 9 4 | 1 36 8 | 2 3 ... |
Topic: Aug 13 VH |
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Replies: 9
Views: 42212
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Forum: Daily Sudoku puzzles Posted: Thu Aug 13, 2009 4:20 am Subject: Aug 13 VH |
Here is the grid after basics.
Below is how I solved it
xyz wing 3-4-9, taking out the 3 in c3r9
+-------------+-------------+----------+
| 57 9 4 | 136 136 8 | 2 36 57 |
| 37 6 8 ... |
Topic: Aug 11 VH |
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Replies: 7
Views: 44514
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Forum: Daily Sudoku puzzles Posted: Tue Aug 11, 2009 5:11 am Subject: Aug 11 VH |
hint
A 36 w-wing solved this one
Basics up to this point locates a wing-span.
+--------------+---------------+----------------+
| 256 1 5678 | 9 2567 3 | 256 4 268 |
| 2569 78 567 ... |
Topic: Aug 8, VH |
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Replies: 5
Views: 30120
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Forum: Daily Sudoku puzzles Posted: Sat Aug 08, 2009 6:12 am Subject: Re: Aug 8, VH |
Solution: Unique Rectangle, row 6 cols 7 and 8 (26) and row 9 cols 7 and 8 (269) (26), leaves (9) in row 9 col 7
I solved this with an xy-wing.
Below is a grid that had me stumped for quite awhi ... |
Topic: Daily Sudoku:Thu 6-Aug-2009 VH |
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Replies: 9
Views: 45626
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Forum: Daily Sudoku puzzles Posted: Thu Aug 06, 2009 7:19 am Subject: Daily Sudoku:Thu 6-Aug-2009 VH |
On my first attempt, the puzzle fell apart with simple box line interactions. So I tried again from a different approach and the same thing happened. Have I been twice lucky (or unlucky!) or have othe ... |
Topic: Aug 4 VH |
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Replies: 6
Views: 35600
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Forum: Daily Sudoku puzzles Posted: Tue Aug 04, 2009 10:58 pm Subject: Aug 4 VH |
I think you must mean c36 for the 'scraper.
...skyscraper on 6 (C26) is another one stepper. |
Topic: August 1 DB |
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Replies: 14
Views: 54959
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Forum: Other puzzles Posted: Tue Aug 04, 2009 6:30 am Subject: August 1 DB |
As luck would have it, or as my ignorance would have it, the puzzle here has a grid with a place to click it for online play. So my question made no sense here. But as you pointed out, there is an awe ... |
Topic: Aug 4 VH |
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Replies: 6
Views: 35600
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Forum: Daily Sudoku puzzles Posted: Tue Aug 04, 2009 2:58 am Subject: Aug 4 VH |
A 16-13-36 xy wing does it
+---------------+-----------+-------------+
| 1269 169 2689 | 5 2468 46 | 3 128 127 |
| 5 7 28 | 1 28 3 | 6 9 4 |
| 126 136 4 | 9 268 7 | 18 12 ... |
Topic: Puzzle NR_065 |
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Replies: 16
Views: 60903
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Forum: Puzzles by daj Posted: Tue Aug 04, 2009 2:45 am Subject: Puzzle NR_065 |
The W-wing with the 46 cells does it. A 4 is pinched in r4c3, and in r6c8. Thereafter, the cleanup solves the puzzle. Whew, quite a challenge for moi.
In sum, this took an xyz wing, an x-wing, an xy ... |
Topic: Puzzle NR_065 |
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Replies: 16
Views: 60903
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Forum: Puzzles by daj Posted: Mon Aug 03, 2009 6:31 am Subject: Puzzle NR_065 |
Voila!
I do now understand pincer transports! I get it. Thanks Keith and Marty.
Marty's 'splaining does indeed explain. I bet that "transportation" will indeed be useful in future puzzles. ... |
Topic: Puzzle NR_065 |
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Replies: 16
Views: 60903
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Forum: Puzzles by daj Posted: Mon Aug 03, 2009 2:15 am Subject: Puzzle NR_065 |
Ummm...yes, it was Danny. My bad. Sorry.
While we are here chatting, could you kindly direct me to a site where I can study pincer transportation?
Keith is correct that my grid shows the result ... |
Topic: Puzzle NR_065 |
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Replies: 16
Views: 60903
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Forum: Puzzles by daj Posted: Sun Aug 02, 2009 7:25 pm Subject: Puzzle NR_065 |
Marty,
maybe you can post the grid and your xyz-wing?
I wouldn't have an intermediate grid which showed it. I'm assuming I just made a mistake, otherwise someone else would have seen the same solut ... |
Topic: Puzzle NR_065 |
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Replies: 16
Views: 60903
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Forum: Puzzles by daj Posted: Sun Aug 02, 2009 6:01 pm Subject: Puzzle NR_065 |
Keith is correct that my grid shows the result after removing the 4 due to a 4-7-8 xyz (47, 48, 478) wing. I do not see an x wing involving 4s, however. Can you elaborate? I do see an x wing that allo ... |
Topic: Puzzle NR_065 |
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Replies: 16
Views: 60903
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Forum: Puzzles by daj Posted: Sun Aug 02, 2009 4:27 am Subject: Puzzle NR_065 |
Here is the grid left after basics and finding an xyz wing 4-7-8 removing the 4 in r4c4.
+----------+--------------+----------------+
| 9 8 5 | 6 3 2 | 4 1 7 |
| 6 4 2 | 1 ... |
Topic: August 1 DB |
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Replies: 14
Views: 54959
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Forum: Other puzzles Posted: Sun Aug 02, 2009 3:58 am Subject: August 1 DB |
Is therre a way to play these puzzles online (like Danny's puzzles), other than entering each cell digit, one at a time, into an online grid? |
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